PIC12F675 LED Blinking Code

PIC12F675 LED Blinking Code

This post provides the code to make an LED blink using PIC12F675 microcontroller. This code is written in C language using MPLAB X IDE with XC8 compiler. This code is intended to be the first step in learning how to use PIC12F675 microcontroller in your projects.

Code:

// PIC12F675 Configuration Bit Settings
// 'C' source line config statements

#include <xc.h>

/*define clock freq*/

#ifndef _XTAL_FREQ
  #define _XTAL_FREQ 4000000  // 4MHZ crystal
#endif

// #pragma config statements should precede project file includes.

// Use project enums instead of #define for ON and OFF.

// CONFIG

#pragma config FOSC = INTRCIO   // Oscillator Selection bits (INTOSC oscillator: I/O function on GP4/OSC2/CLKOUT pin, I/O function on GP5/OSC1/CLKIN)

#pragma config WDTE = OFF       // Watchdog Timer Enable bit (WDT disabled)

#pragma config PWRTE = OFF      // Power-Up Timer Enable bit (PWRT disabled)

#pragma config MCLRE = ON      // MCLR

#pragma config BOREN = OFF      // Brown-out Detect Enable bit (BOD disabled)

#pragma config CP = OFF         // Code Protection bit (Program Memory code protection is disabled)

#pragma config CPD = OFF        // Data Code Protection bit (Data memory code protection is disabled)

void main()

{

    GPIO0=0x00;                        // make all GPIO port output

    TRISIO=0x00;                     // TRISIO direction as output

    ADCON0=0x00;                // Internal ADC OFF

    ANSEL=0x00;                  // All Analog selections pins are assigned as digital I/O

    while(1)

    {

        GPIO0=1;                      // Make GPIO0 port high

        __delay_ms(500); 

        GPIO0=0;                     // Make GPIO0 port low

        __delay_ms(500);

    }

}


The following diagram (made in Proteus) shows the PIC12F675 LED Blinking circuit diagram.

Figure 1: PIC12F675 LED Blinking